Father, John Elroy McCaw, started in cable business. Craig took over at 19 after father's death, built into early cell phone giant McCaw Cellular, sold to AT&T in 1993 for $11.5 billion. Much of proceeds reinvested in Nextel and satellite network, wiped out in telecom crash. Craig remains big communications investor. Hopes to score in large-area wireless broadband via nascent Clearwire.